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diff --git a/llvm/lib/Target/WebAssembly/WebAssembly.td b/llvm/lib/Target/WebAssembly/WebAssembly.td
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+++ b/llvm/lib/Target/WebAssembly/WebAssembly.td
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+//- WebAssembly.td - Describe the WebAssembly Target Machine --*- tablegen -*-//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This is a target description file for the WebAssembly architecture, which is
+// also known as "wasm".
+//
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Target-independent interfaces which we are implementing
+//===----------------------------------------------------------------------===//
+
+include "llvm/Target/Target.td"
+
+//===----------------------------------------------------------------------===//
+// WebAssembly Subtarget features.
+//===----------------------------------------------------------------------===//
+
+def FeatureSIMD : SubtargetFeature<"simd", "HasSIMD", "true",
+                                   "Enable SIMD">;
+
+//===----------------------------------------------------------------------===//
+// Architectures.
+//===----------------------------------------------------------------------===//
+
+//===----------------------------------------------------------------------===//
+// Register File Description
+//===----------------------------------------------------------------------===//
+
+include "WebAssemblyRegisterInfo.td"
+
+//===----------------------------------------------------------------------===//
+// Instruction Descriptions
+//===----------------------------------------------------------------------===//
+
+include "WebAssemblyInstrInfo.td"
+
+def WebAssemblyInstrInfo : InstrInfo;
+
+//===----------------------------------------------------------------------===//
+// WebAssembly Processors supported.
+//===----------------------------------------------------------------------===//
+
+def : ProcessorModel<"generic", NoSchedModel, [FeatureSIMD]>;
+
+//===----------------------------------------------------------------------===//
+// Target Declaration
+//===----------------------------------------------------------------------===//
+
+def WebAssembly : Target {
+  let InstructionSet = WebAssemblyInstrInfo;
+}